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In the title complex, [Cu(C 13 H 11 N 3 O 2 ) 2 (C 12 H 8 N 2 )](NO 3 ) 2 , the Cu II  atom (site symmetry 2) is coordinated by four N atoms from one 1,10-phenanthroline and two hydrazine ligands, respectively. The hydrazine ligands coordinate to the Cu II atom by a pyridine N atom. These four atoms form a slightly distorted square-planar N 4  donor set. In the packing, two additional Cu⋯O inter­actions occur [Cu⋯O = 2.462 (2) Å], resulting in a typical Jahn–Teller-distorted octahedral environment around the Cu atom. N—H⋯O hydrogen bonds result in a three-dimensional network. The O atoms of the anion are disordered over two positions in a 0.68 (2):0.32 (2) ratio.

Bis(N′-benzoylpyridine-4-carbohydrazide)(1,10-phenanthroline)copper(II) dinitrate